The red wire is for low speed black wire is for high speed. Specifications of The Blower Kit? – Length x Width x Height: 13″ x 4.25″ x 4.5″, Air discharge length: 1″ x 4 7/8″ (each side), Distance between flanges: 3.25″, Motor Type: AC Shaded Pole, Rotation: CCW, Motor Bearing Type: Ball, Insulation: Class H (rated to 392°F), Motor RPM: 2800, Airflow in C. M: 80/135, Volts: 115, Frequency: 60 Hz, Power Consumption: 53 watts, Amperage: 0.92, Blade Material: Composite, Frame Material: Aluminum. Cross Reference Numbers: R7-RB167, 910-157/P. 100% Ball Bearing Blower? – The bearing type of this regency 910-157/p blower is 100% sealed ball bearing blowers, which is last longer and outperform cheaper sleeve bearing blowers. Sealed ball bearings require no additional maintenance, are less prone to the effects of heat, and will operate more quietly over their full. Reduces Noise? – This replacement regency fireplace insert blower comes with rubber mounting feet which to reduce noise and vibration. Heats Rooms Efficiently? – The regency hampton HI300 blower helps keep the warm air moving, it does a great job at blowing the warm air into the room. The heat will be much more uniformly throughout the room, rather than being overly-concentrated just around the fireplace. Replacing your fireplace blower today, warming your home, warming your heart! Replacement Fireplace Blower for Regency Alterra CI1200, CI1250, CS1200, CS2400. Regency Classic C33, C34, F2400, H2100, I3100, I1200, I2400. Regency F Series F1000, F1100, F3100, 3100. Regency Hampton H200, H27, HI200, HI300, HI400. Regency Ultimate P42, U43, U45. Regency Waterford E61, T25.